IVF Process and Procedures Revision Notes | GCSE OCR Foundation Biology

What this lesson covers

Explore the step-by-step process of In Vitro Fertilisation (IVF), from hormone stimulation to embryo implantation, understanding how this reproductive t...

• Explain the role of FSH and LH hormones in IVF treatment
• Describe the complete IVF process from egg collection to embryo implantation
• Evaluate the advantages and limitations of IVF as a fertility treatment
• Apply knowledge of reproductive hormones to explain why IVF works

Key ideas to keep in view

Use this lesson to stay inside B3.2 Coordination and control - the endocrine system while connecting the detail back to the wider B3: Organism level systems topic.

• B3: Organism level systems
• B3.2 Coordination and control - the endocrine system
• GCSE OCR Foundation Biology

Lesson notes preview

Read the core explanations from IVF Process and Procedures before testing yourself from memory.

• 1. Why Some Couples Need Help Having Children
• Around 1 in 7 couples struggle to conceive naturally. Sometimes the problem is blocked fallopian tubes, low sperm count, or hormonal imbalances that prevent normal ovulation.
• When natural conception fails, doctors can use a technique called In Vitro Fertilisation - literally meaning 'fertilisation in glass'. Instead of fertilisation happening inside the woman's body, it happens in a laboratory dish.
• A fertility treatment where eggs are fertilised by sperm outside the body in laboratory conditions, then implanted into the uterus.
• Trap: Many students think IVF means 'test tube babies' - but no test tubes are used. The fertilisation happens in shallow laboratory dishes called petri dishes.
• 2. Step 1: Hormone Treatment to Produce Multiple Eggs
• Normally, a woman releases just one egg per month during ovulation. For IVF to work, doctors need multiple eggs to increase the chances of success.
• The woman is given hormone injections containing FSH (Follicle Stimulating Hormone) and LH (Luteinising Hormone). These are the same hormones her body produces naturally, but in much higher concentrations.
• A hormone that stimulates the maturation of multiple eggs in the ovaries during IVF treatment.
• FSH causes several follicles in the ovaries to mature simultaneously, instead of the usual one. LH then triggers the final maturation of these eggs, preparing them for collection.

Continue through the topic

Move to the related lessons or back to the topic page when you need the wider sequence before exam-style practice.